Perforating-machine



F. M. LASERSON.

PERFORATING MACHINE.

APPLICATloN FILED APR.12.1919.

Dn O T. N E V m ATTORNEY UNITED ySTATES PATENT ,oFFlca FREDERICK M. LAsEnsoN, or New vonk, N. Y.

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misera.

VSpecification of Letters Patent.

y Application ledApril 12, 1919. Serial Nic. 289,661.

To all whom t may concern:

Be it known that I, FREDERIC-K M. LASER- soN, a citizen of Great Britain,.resident of New York city, in the county of New York and State of New York, have invented certain new and usefullmprovements in Perforating-Machines, of which the following chine as hereinafter described and as illustrated in the acompanying drawing in which- Figure 1 -is a front view of a perforating machine embodying my invention.

Fig. 2 is a side view ofthe machine, and

Fig. 3 is a plan view'with parts in section and parts removed.

ln the drawing the reference numeral 1 denotes a substantial base, preferably circular in form and provided with a central open space for the observation of the work and the spots where the perforations are to be made. Suitably secured to the said base are two upright frame members or guides A and 5 which are joined at the top by a handle 6. The base carries a convenient needle guide 3. The said guides are hollow and l provided with slits 7 and 8. The frames are faced with guide plates 9 and 10 forming vertical guide slots 11 and l2. 13 is an electric motor suspended in a yoke comprising the upper bearing member 14, the lower bearing member 15 and the yoke rods 16, 16 by means of which the said bearing members are joined.

The upper bearing member has a stud 17r` adapted to move in the guide slot 12. The lower member 15 has a similar, but longer stud 18 which Islides in the guide slot 12 and to which stud 181the lower end of a spring 19 is attached. The upper end of the spring is attached to a stud 20 which is part of the handle 6.

The bearing members 14 and 15 are also provided with studs 21 and 22 which extend through and slide in the guide slot 1l. Within the frame member 5, the said two studs carry a rack frame 23 to which is secured a rack 2A. A spring 25 isattached to the rack vframe at 26 and the upper end of the spring is attached to a stud 27 in the handle 6. rJlhe handle 6 and the studs 2O and 27 are preferably assembled into one piece with the plates 28, 28v which are form upper stops for the studs 17 and 21 as will be understood.

rllhe rack 24 is engaged by a pinion 30 fast on a shaft 31 which extends outside the frame and carries an operating handle 32.

33 is a spring coiled around the shaft of the pinion and which is wound up when the Patented July 13,1920.

screwed to the frames 1 and 5 and which l shaft is rotated to prevent too rapid or careless operation. A pointer 34C is carried by the motor yoke and moves along a scale 35. 36 is a switch for starting and stopping the motor and 37 is alug vfor attachment to a lamp socket. 38 is ya needle attached to the motor to be driven thereby.

In operation the machine is placed on top of the layers of cloth and the needle registered with the mark on the cloth where the perforation is desired. rlhe motoris started and the operator then turns the handle 32, whereby the motor is lowered and the needle driven intov the cloth, perforating it. .In order to prevent breakage of the needle, the

thickneses of cloth may be measured and by means of the pointer and scale, the operator.

may accurately observe the extent to which the needle has penetrated the cloth and is able to, stop the operation when all the layers have been perforated.

rllhe needle is moved with an even steady motion and pressure as the pinion is'rotated and against the tension of the springs 19 and 25. When the perforation-is finished the motor is raised and kept in the upper position by the said4 springs.

A perforating machine constructed in accordance with this invention possesses several advantages. lt is substantial and relatively heavy so as to keep its position on the cloth, yet it is at the Same time .easily carried about and the operator may safely grasp the handle 6 without danger of touching the the marks indicating where perforations are to be made. c

A1While ll have illustrated the preferred form of the invention it will be understood that I do not intend to limit myself to the exact disclosure herein, but that changes in the detailed form of the construction may be made without departing from the principle of the invention andthe scope of the appended claims. l claim:

l. The combination of a circular base having a central opening, hollow upright frame members supported on said base, a handle for joining the upper ends of said frame members, a yoke suspended from within thelatter, guiding means on said frame members for the said yoke, a motor su ported in the latter, a needle carried by sai motor, a

needle guide secured to the said base and maar@ for suspending the said yoke from the frames, a rack secured to the said yoke, a pinion in engagement with said rack, a shaft for rotating said pinion, to raise and lower the motor, a needle carried by the latter and a needle guide secured to the said base.

3. The combination of a circular base, hollow frame members secured thereto, a yoke, guiding means on said yoke extending into the said frame members, springs in the latter attached to the said yoke for maintaining it in ,raised position, means for raising and lowering the said yoke, a motor in the same, a needle carried, by the said motor and a needle guide secured to the said base.

4. The combination of a circular base, hollow upright frame members supported on said base in diametrically opposite relationship, a yoke, a motor mounted in the same, a

needle carried by said motor, means for guiding said yoke and motor in the said frames, springs in the latter for normally maintaining said yoke and motor in upper raised position, means for raising and lowering said motor and a handle secured to the said frame members.

' Signed at New York, in the county of New York and State of New York, this 8th day of April, A. D. 1919.

FREDERICK M. LASERSON. 

